Duck boat



FIG. 1 is a top perspective of a duck boat showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevation view thereof, the left side elevationview being a mirror image of that shown.

The ornamental design for a duck boat, as shown and described.